6878393 has 8 divisors (see below), whose sum is σ = 7050888. Its totient is φ = 6707584.

The previous prime is 6878383. The next prime is 6878401. The reversal of 6878393 is 3938786.

It can be written as a sum of positive squares in 4 ways, for example, as 76729 + 6801664 = 277^2 + 2608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6878393 - 2¹² = 6874297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6878363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12071 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (881361).

Almost surely, 2^6878393 is an apocalyptic number.

It is an amenable number.

6878393 is a deficient number, since it is larger than the sum of its proper divisors (172495).

6878393 is a wasteful number, since it uses less digits than its factorization.

6878393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its digits is 217728, while the sum is 44.

The square root of 6878393 is about 2622.6690603277. The cubic root of 6878393 is about 190.1788989061.

The spelling of 6878393 in words is "six million, eight hundred seventy-eight thousand, three hundred ninety-three".